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package jse;

/**
 *
 * @author WangShuai
 */
public class operatorPriorityTest {
    public static void main(String[] args) {
//        String a = null;
//        System.out.println(a != null && a.equals("s"));
//        System.out.println(a != null && a.equals("s") && a.equals("d"));
//        System.out.println(a != null && a.equals("s") || a.equals("d"));  //java.lang.NullPointerException
        System.out.println(!"abc".equalsIgnoreCase("ABC") && 2>3);
    }
}
